Machine for making spring-wire broom-holders



- (No Model.)

2 SheetS -Sheet 1Q M. D. KREMER.

MACHINE FOR MAKING SPRING WIRE BROOM HOLDERS.

No. 469,911 Patented Mar. 1, 1892.

(No Model.) 2 Sheets-Sheet 2. v

.' M. .D. KREMER.

MACHINE FOR MAKING SPRING WIRE BROOM HOLDERS. NO; 469,911. Patented Mar.1, 1892.

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UNITED SIAFES PATENT OFFICE.

/ iiiIoHEL D. KREMER, on NEW MARION, INDIANA.

MACHINE FOR MAKING SPRING-WIRE BROOM-HOLDERS.

SPECIFICATION forming part of Letters Patent N 0. 469,911, dated March1, 1892. Application filed October 15, 1891. fierial No. 408.840. (tomodel.)

To all whom it may concern.-

' Be it known that I, MICHEL D. KREMER, a citizen of the United States,residing at New Marion, in the county of Ripley and State of Indiana,have invented certain new and useful Improvements in Machines for MakingSpring-Wire Broom-Holders and I do declare the following to be afull,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to certain new and useful improvements in machinesfor making spring-wire broom-holders, and it aims to provide a simpleand easily-operated device for the manufacture of spring-wirebroom-holders of a construction hereinafter specified; and to this endit consists in the machine constructed and operating substantially asand for the purpose hereinafter described, and shown in the accompanyingdrawings, in which- Figure 1 is a perspective view of my machine. Fig. 2is a vertical longitudinnl section on a line passing through the center.

Fig. 3 is a transverse section upon a line passing through thecrank-shafts, the parts being in a different position. Fig. 4is a detailperspective view of one of the crank-shafts and the former operated byit. Fig. 5 is a perspective View of the broom-holder to be made. Fig. 6is a section of the same.

The broom-holder to be made, as shown in Fig. 5, consists of two springclamping-jaws made of wire, each of which consists of twohorizontally-disposed loops A, connected by a V-shaped portion B, acoilb being formed at the junction of each leg and one of the loops, and allin one continuouspiece of wire. The V-shaped portion constitutes themeans for securing the pair of loops to a supportingblock 0, suchportion being arranged in a vertical plane and at a right angle to theloops. The two jaws are arranged so as to be in the same horizontalplane with the free ends of the loops at thereof, adjacent to eachother.

The broom-handle is thrust in between said ends, which, because of theirown resiliency and the coils b, will admit and bear against the samewith sufiicient force to retain it. The outer ends of the loops arepractically semicircles to enable them to be readilyseparated by thebroom-handle. The two jaws are secured to the block 0 by overlapping thepoints of their V-shaped portions on one side thereof and passingthrough the space between them a fastening device, consisting of a pieceof wire formed into a ringD with two extensions. The latter pass throughthe said overlapped ends after being passed through an opening in theblock 0, with the ring D on the outside thereof, and after passingthrough said ends are bent down against the back of a smaller block 0.Preferably a recess is provided in the back of the latter to containsaid V-shaped portions and the block 0', so that the rear face of thelatter will not project beyond the rear side of the block C. The springD, besides forming a part of the fastening device, also serves to limitthe inward movement of the broom-handle and prevents the-same fromcoming into contact with the wall or other. surface to which the holdermay be attached.

My machine is adapted for use in forming the spring clamping-jaw,consisting ofthe' pair of parallel loops A, the V-shaped portion B, at aright angle to the latter, and the coils b at the junction of the otherparts, and it will now be described.

E E designate two parallel vertical standards having each at its upperend a boxing or bearing 6 for journa-ling an approximately ellipticalformer F of substantially. the shape of one of the loops A. Said formersF have each an outwardly-extending gudgeon or hub f, by which it isjonrnaled in one of the boxings e and which has such length as to extendbeyond the outer face thereof. Passing through an axial openingextending entirely through each gudgeon f is a shaft G, on whose outerend is acrank g. Said shafts, for a purpose hereinafter described, arecapable of longitudinal movement in and out in the gudgeons, and when atthe inner limit of their movement are designed to rotate the hubs orgudgeonsfand their formers F. To

enable this to be done, a slot or recess f is formed diametricallythrough the projecting portion of the gudgeon f, into which the radialor cranked portion 9 of the crank will pass when moved inward, and willwhen so rotated cause the rotation of the gudgeon f and the former F.The lengths of the shafts G are such that when moved wholly inward theirinner ends will come together midway between the standards E E. Theformers consist each of an open frame, as shown,and have an elastic orspring portion f that terminates in an abruptly-curved free end f whichextends toward a rigid portion of the former'near its gudgeon, beingmovable to and from the same. Said elastic portion does not lie in thesame plane as the remainder, but is bent slightly inward toward thecenter of the machine. Thus constructed, a piece of wire to form the jawis bent into a V shape, and the free end of one end of theV is passedthrough an opening in an offset of the rigid portion of one former F,the same being in a horizontal position between the curved end f of theelastic portion f and said rigid portion, and the free end of the otherleg of the V is likewise placed with reference to the other former,which is of course parallel to its mate. The wire is then bent aroundboth of the latter and over the shafts G and down the sides thereofopposite said formers, and a hook it on a vertically-movable bar K isengaged with the point of the V. Said bar is movable by means of atreadle, (not shown,) and when moved downward will carry with it thepart of the wire which is free to move, resulting, before the free endsof the legs on the V can be drawn out of the openings in the formers, inthe parts adjacent to the elastic portions f being placed in engagementwith the latter and moving them until their curved ends f bite and bindthe free ends of the wires against the rigid portions of the formers F.The more tightly the wire forming the loop-blank is drawn down the moretightly will its free ends be held. By rotating both formers F the coilsb of the jaw will be formed around the shafts G, and the jaw thuscompleted, as the formers should be stopped in their original horizontalpositions, so that the remaining portion of the V will be left at aright angle with the loops A, which will be found upon the formers.

To remove the completed article, it is simply necessary to slide the twoshafts G outward out of the coils to free the point of the V from thehook 7c and to disengage the free ends of the loops from the formers,which, as the normal tendency of the end f of the clastic portion f ofthe former F is away from the rigid portion as soon as the pressure isremoved therefrom, can readily be done.

For the support of the inner ends of the shafts G, I have provided amovable curved elastiQ bar K, having an end with an opening adapted tobe placed in alignment with said shafts befiore they are moved inward toenable them to rotate the loop-formers, so that the inner ends of theshafts may enter such opening, and which may beznoved out of the way toenable the free withdrawal of the completed jaw and the insertion ofwire for another. Said bar is mounted upon and attached at its inner endnot having the opening to a curved frame L, upon which it is caused torest and be held, when in its shaft-supportingposition, by means of alink M, which embraces said frame, being pivoted thereto at one end at land having attached at its other end a handle N, having a portion 02, bywhich it is fastened to the link. Said portion n of the handle Nbearsagainst and clamps the bar K to the frame L, when it engages said barfarthest from its point of attachment to the latter; but when swungtoward the said point of attachment said bar K is free to move and,being elastic, does move to a position out of the way when not in use insupporting the shafts G. On the face of theframe L is a taperedprojection or lug m, which enters an opening or recess in the bar K toinsure its being placed properly in alignment with the shafts G.

My machine is preferably mounted upon a bench, which the operator canstraddle, so as to enable him to most conveniently operate the treadleto move the hooked bar K and the cranks to form the coils. It may beobserved that the wire to form the coilsb is taken from the leg portionsof the V.

The machine is simple in construction, has but few parts, is easilyoperated, enables the rapid manufacture of the wire jaws, and renders itcertain that all produced will be exactly alike.

Having thus described my invention, what I claim to be new, and desireto secure by Letters Patent, is-

1. In combination, the Wire-loop formers having a wire clamping orholding part, the longitudinally-movable shafts to rotate said formers,and a movable bar to partially support the shafts at their inner ends,substantially as described.

2. In combination, the wire-loop formers having a relatively-fixed and arelatively-movable part forming a wire-clamp, means for causing a wireblank to operate said movable part, and means to rotate said formers,and longitudinally-movable shafts and movable bar, said shaftbeinglocated and arranged to rotate the'formers, and the movable bar tosupport the inner ends of said shafts, substantially as described.

3. In combination, the wire-loop formers, the gudgeons thereon havingrecesses in their outer ends, and the crank-shafts in said gudgeonsadapted to be moved into and out of engagement with said recesses,substantially as described.

4. In combination, two wire-loop formers having means to hold each theend of a wire blank, the vertically-movable bar to draw said blank toconform to saidformers, the 10ngitudin'ally-movable shafts to rotate thelatter, and the movable bar to partially support;

